Season 12 Episode 1:

Near Death Experience

Sergeant Toolan is seriously injured as he and Frost try to prevent a young man's suicide attempt. A ritualistic murder echoes a previous case -- and when another woman is murdered, it seems as if it's a direct challenge to Frost.

Season 2 Episode 1:

A Minority of One

Season 1 Episode 3:

Conclusions

Inspector Frost has plenty on his plate when there is a hit and run accident and a casino robbery; however, the crisis situation is exacerbated when a police officer goes missing and an armed robber turns up.